Tohban Report 2018-04-04

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Tohban Reports
Start Date: 28 Mar 2018
End Date: 4 Apr 2018
Tohban: Juan Carlos Martinez Oliveros
Tohban email:
Next Tohban: Mitsuo Oka
List all reports


Solar Activity

Solar activity this week was relatively low. There are not visible active regions on disk. Solar activity is expected to be very low for the next three days (04-06 Apr).

TIME RANGE:28-Mar-18 00:00:00.000 -- 04-Apr-18 00:00:00.000
% RD_WEEK_FILE: No input file for week 18_13 found in: $DIR_GEN_GEV
% RD_WEEK_FILE: No input file for week 18_14 found in: $DIR_GEN_GEV
No GOES flares for Time Range
% HSI_TOHBAN_FLARE_COUNTER: No RHESSI Flare list for this time period
% HSI_TOHBAN_FLARE_COUNTER: No RHESSI Flares for this time period

Memory Management

The SSR reached a maximum of ~95 percent during this week.

Spacecraft Status

Detectors 3 and 8 are active and taking data.

The cold plate 1 and 2 temperatures are ~156.4K and 155.3K. As last week.

Currently the Cryocooler power is ~55 W and the acceleration is at ~11mg

Data Gaps

= Detector issues

6 hours of VC1 data due to poor communications at AGO.

Other notes

Data was deleted on March 31 as the SSR fill level was very high. This move brought the SSR fill level down from 95% to 65% full. We skipped over data recorded from 2018-082-08:36 to 2018-084-12:07 UTC.

Spacecraft Management

A spin down experiment is currently been make. The expectation is that reducing the mechanical stress on the s-band communication subsystem, stable communications with the spacecraft can be achieved.

The procedure started on 3 April 2018 at 23:00 UT. The spacecraft achieved 10 RPM on 4 Apr 2018.

Decimation Active/Vigorous
HLAT Decimation Rear decimation
Night time data (fronts) plus/minus 4 minutes from daylight
Night time data (rears) plus/minus 4 minutes from daylight
Require extra passes? No
Requirement for moving pointer? Yes
Attenuator operation logic enabled
Detector problems? See notes above.
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